Goku’s Super Saiyan Blue Kaioken is the latest transformation introduced in Dragon Ball Super. It is Goku’s most powerful transformation so far. This form is quite hard to contain, as the power of Blue is multiplied by tenfold. It also had a negative effect to Goku afterward. His latest usage of this form is when Gohan asked him to not hold back on him in their fight just before the Tournament of Power.
This form will make its comeback soon in the Tournament of Power. It is likely that Goku will be using this form against Jiren the Grey from Universe 11. He will only use this form if necessary because it drains a lot of stamina and it also damages the body. And the form’s reappearance will have an improvement and it will be shown in the back to back episode of Dragon Ball Super on October 8.
The form, which formerly multiplies Blue’s power by ten, will now do it twenty times. The Super Saiyan Blue Kaioken x 20 is said to be Goku’s one of his ultimate weapons. It is expected to become so powerful that even the Gods watching the match will be surprised. But against Universe 11’s most powerful warrior, the power of SSB Kaioken x20 is nothing. Todd Blakenship translated a scan from Jump Magazine. His tweet also reveals that the October 8 episode would be two episodes worth of material (this is not a back to back episode).
It seems like Goku has something he was saving for the Tournament of Power. After Super Saiyan Blue Kaioken x 20 failed to stop Jiren, he is expected to reveal this something. It is possible that his Limit Breaker transformation is something he has done before. And because he realizes that this transformation could be dangerous, he will just use this for the right moments. It is also possible that his trump card will also fail because Jiren is just too powerful. Goku will become very desperate, which will pave way for his Limit Breaker transformation.
Either way, there’s no way Universe 7 would lose in the Tournament of Power. When the whole Universe 7 is erased, there would be no next arc which might feature Uub. Though if Universe 7 wins, I imagine the next arc to feature the victorious (but this is highly impossible, because Goku will win!).